Progress of Treatment Technologies for Oilfield Produced Water from Chemical Flooding Process
CHEN Hong
DENG Zhengyu
GONG Zhaobo
YU Guanlong
CHEN Wei
CHEN Dong
GAO Yingxin
Abstract：Enhanced oil recovery technology by chemicals has been increasingly applied to major domestic oilfields.At the same time,a large amount of produced water containing crude oil displacing agents has been manufactured.The chemical flooding produced water has the characteristics of complex composition,strong emulsification and difficulty to removal.The source,characteristics and its treatment and discharge requirements of the chemical flooding produced water are reviewed.The development of new reagents as demulsifiers,oxidizers,adsorbents,compounding methods of different structures or different types of reagents,process condition optimization and the selection and the evaluation methods of chemical agents for the produced water treatment are introduced.And new oil/water separator equipment including the inclined tube oil remover and the ultrasonic demulsification degreasing apparatus,fine filter equipments such as a polymer film,an inorganic ceramic membrane,and a surface modified membrane,and integrated processing equipments are summarized.The research status of advanced oxidation technologies,electrochemical methods and combined technologies are also summarized.According to existing problems in the field of the produced water treatment,the perspective of treatment technologies of chemical flooding produced water is also proposed.
Keywords：oilfieldchemical flooding processproduced waterpolymersurfactanttreatment technology
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 95-101 )